Add 7/72 and 42/7
1st number: 7/72, 2nd number: 6 0/7
7/72 + 42/7 is 439/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
7/72 = 7 × 7/72 × 7 = 49/504 - Likewise, for the 2nd fraction, since 7 × 72 = 504,
42/7 = 42 × 72/7 × 72 = 3024/504 - Add the two like fractions:
49/504 + 3024/504 = 49 + 3024/504 = 3073/504 - 3073/504 simplified gives 439/72
- So, 7/72 + 42/7 = 439/72
In mixed form: 67/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/72+42/7 7/72+84/7 7/72+42/14 21/72+42/7 7/72+42/21 35/72+42/7 7/72+42/35 49/72+42/7 7/72+42/49